Hoisting device.



C. J. BURKE & A. SHIPPY.

, HOISTING DEVICE.

APPLIUATION FILED PEBI 13, 1909.

Patented Jan.18,1910.

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' HOISTING DEVICE.

. APPLIUATION FILED FEB. 13, 1909. 946,91 3.

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Patented Jan. 18, 1910.

C. J. BURKE & A. A. SHIPPY.

HOISTING DEVICE.

PPLIUATION FILED PEB. 1a, 1909.

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Patented Jan. 18, 1910.

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UNTTED STATES PATENT OFFTCE.

CONSTANTINE J'. BURKE AND ARTHUR A. SHIPPY, OF WATERLOO, IOWA.

HOISTING DEVICE.

arenile.

To all whom it may concern.

Be it known that we, CoNs'rAN'rINE J. BURKE and ARTHUR A. SHIPPY, citizens of the United States of America, and residents of Vaterloo, Blackhawk county, Iowa, have invented certain new and useful Improvements in Hoisting Devices, of which the following is a specilication.

Our invention relates to improvements in hoisting devices, and the object of our iinprovement is to provide a suitable knockdown duplicate device for lifting materials for contractors use, which will be inexpensive .in construction and efficient in service, which can be controlled to permit of delivery or taking on of a load at any stage of ascent or descent, and which is provided with new and improved means for alternately securing and releasing the duplicate traveling carriages at the upper limit of their travel. This object we have accomplished by the means which are hereinafter described and claimed, and which are illustrated in the accompanying drawings, in which:

Figure 1 is a vertical transverse section of the partially constructed walls and two floors of a building, with a front elevation of our improved hoisting device as set up and in effective operation adjacent thereto. F ig. 9. is an enlarged front elevation of the upper frame of our hoisting device, as separated from its supports and the duplicate carriages. Fig. 3 is an upper plan view of the structure shown in Fig. 2. Fig. 4 is an under plan view of the structure shown in Fig. 2. Fig. 5 is a longitudinal vertical section taken along the line a-b in Fig. 3, the direction of view beingindicated by the arrow in the latter figure. Fig. 6 is a transverse vertical section taken along the line c-cZ in Fig. 2, the direction of view being indicated by the left-hand arrow in the latter igure. Fig. 7 is a transverse vertical section of the structure shown in Fig. 2, being the same section as depicted in Fig. 6, but showing the carriage catch engaged with the movable aws of the securing device on that side. Fig. 8 is a transverse vert-ical section of the structure shown in Fig. 2, taken on the line e--f of the latter and in the direction of view indicated by the right-hand arrow. Fig. 9 is an enlarged broken detail, showing an inner or left-hand end elevation of the structure shown in Fig. 10. Fig. 10 is Specification of Letters Patent.

Application filed February 13, 1909.

Patented Jan. 18, 1910.

serial No. 477,690.

an enlarged broken detail of the middle shifting-lever for controlling the movable securing jaws for the carriage catches. Fig. 11 is an enlarged perspective view of one pair of securing jaws for the carriage-catch. Fig. l2 is an enlarged upper plan of the fixed pulleys used to divert the lines of direction of the draft-cables. Fig. 13 is a :liront elevation of one of the duplicate carriages. Fig. 14 is a broken side elevation of the carriage shown in Fig. 13.

Similar characters of reference indicate similar parts throughout the several views.

The main support-ing frame of our improved knock down hoisting device is constructed of parallel longitudinal beams or plates 1 and 84 spaced apart and secured together at the ends by the transverse timbers 99 and 100. These four timbers or connected plates constitute a rectangular boxing oi considerable strength and open above and below. On each beam 1 and 84 are secured near the ends brackets 43 having downwardly projecting and obliquely-outward directed socket-s adapted to receive removably the upper ends of the legs 2, 35, and 61, the lower ends of which may be supported on a scaiolding or other means projecting .from a building under construction or repair. j

As shown in Fig. 2, each leg may be braced by means of removable link-rods such as the rods 44 or 50 secured to similar eyebolts 57 or 58, their lower ends being detachably secured to similar eyebolts in said legs.

The side-beams or plates 1 and S4 are reinforced by a plurality of vertical uprights 4l", 46', 4S', and 49 on their outer faces, while such beams are connected on their upper edges by cross-beams 3S, 39 and 41, and on their lower edges by cross-beams 45, 46, 48 and 49. Secured to the upper edges of the side-plates 1 and 84 are the pairs of bearing-boxes 62 for the ends of the transverse shafts 37, 40 and 42, on which are mounted respectively the pulleys 5, 8, and the pair 10 and 85. 0n the lower edges of the side-plates 1 and 84 are studs 53, 54, on each plate, on which are the rotatable horizontal pulleys 63, 64, 65 and 66 respectively.

Parallel, vertical posts 6, 7 and 9, alined in the medial longitudinal line of the previously described supporting boxing, are employed as runways or vertical guides for S4. To studs 93, 94, 95 and 96 on the under forward parts of the jaws 74, 73, 81 and 79 respectively are secured the outer ends of short cables 70, 118, 55 and 119.

A bracket 47 is projected from the middle of the beam 1, and to it is medially pivoted at 90 a hand-lever 4, whose inner or rear end has a cap-plate 115 from which projects a threaded pin 111 and separated clips 113 and 114. A short bar 112, centrally perforated to pass over the pin 111, has near each end the clips 116 and 117 which correspond to the clips 113 and 114, and lie opposite to them respectively. The bar 112 is removably secured on the pin 111 by means of a thumb-nut 77. )Vlien drawn taut, the inner ends of the cables are secured between the clips aforesaid as shown in Fig. 10, and in case of slackness of either cable, the adjustment may be made for tautness by releasing the nut 77. As shown in Fig. 4, the lever 4 is in its middle position, with the plate-springs holding both pairs of jaws closed together. If the lever 4 is shifted in one direction or the other, the short cables on the same side are tightened, while the cables on the other side are slackened, the tightened cables drawing apartthe jaws to which they are attached.

lVhen one of the carriages has arrived at the upper limitof its movement, its upwardly-projecting barbed loop 24 passes between the pair of aws immediately thereover and the barbs of the loop rest upon and are supported by the plated angles 11S of the jaws, the plate-springs acting to close the jaws upon the shanks 29. To release the carriage it is only essential to shift the lever 4 in the proper direction to separate the jaws to release said loop 24. Immediately above each pair of said jaws is a cross-bar 101 (or 108) whose ends are fixed to the side-beams 1 and 84. Spaced away from each bar 101 and lying below it parallel thereto is a vertically-movable bar 104, (or 107), which has separated upstanding pins movable through oriiices in the bar 101 or 108 over it, the upper ends of the pins having nuts 102 or 105) or other means to keep them in suspension. About each of said pins, and lying engaged between said parallel bars, are the coiled springs 103 or 106, which keep the lower bar projected away from the upper. The bars 104 and 107 act as resilient buffers to take the shock of contact of the upwardly-moving loops 24, as will be seen by referring to Fig. 7.

Our hoisting-device as a whole, is of inexpensive construction, while it is so arranged as to be conveniently knocked down for transportation, and the boxing of the frame may be elevated from time to time along the guides 6, 7 and 9, to serve different stories or stages of construction.

Having described our invention, what we claim as new, and desire to secure by Letters Patent, is:

1. The combination with a supporting frame of cable-pulleys mounted thereon, two hoisting carriages or platforms arranged to be raised or lowered alternately side by side beneath said frame, fixed pulleys, a hoistingcable attached by its ends to said carriages or platforms and passing upward over said cable pulleys, ythence down around said fixed pulleys and thence about a snatchblock-pulley, a snatch-block pulley, a draftconnection attached to said cable, a lugged catch projecting upwardly from each carriage, a pair of pivoted jaws movable across the line of travel of each catch, yieldable resilient means bearing against each pair of said jaws to keep them normally in contact, a hand-lever pivoted to said frame between said pairs ofjaws, and a linking-connection between the free extremity of each of said aws and one end of said lever adapted to operate to disengage an engaged catch from either pair of said jaws when the said lever is shifted in an appropriate direction.

2. The combination with a supporting frame of cable-pulleys mounted thereon, two hoisting carriages or platforms arranged to be raised or lowered alternately side by side beneath said frame, fixed pulleys, a hoistingcable attached by its ends to said carriages or platforms and passing upward over said cable pulleys, thence down around said fixed pulleys, and thence about a snatch-block pulley, a snatch-block pulley, a draft-connection attached to said cable, a lugged catch projecting upwardly from each carriage, a pair of pivoted jaws movable across the line of travel of each catch, yieldable resilient means bearing against each pair of said jaws to keep them normally in contact, a handlever pivoted between said pairs of jaws, a linking-connection between the free extremity of each of said jaws and one end of said lever adapted to operate to disengage an engaged catch from either pair of jaws when said lever is shifted in an appropriate direc-v tion and manually-operable means for releasably engaging and braking said cable to diminish its speed or to cause a cessation of its motion.

3. The combination with a supporting frame of cable-pulleys mounted thereon, two hoisting carriages or platforms arranged to be raised or lowered alternately side by side beneath said frame, fixed pulleys, a hoistingcable attached by one end to one of said carriages and having its other end secured to a winding-drum on the other carriage adapted to vary the length of that part of the cable between said carriages, said cable passing upward over said cable pulleys, thence down around said fixed pulleys, and thence about a snatch-block pulley, a snatch-block pulley, a lugged catch projecting upwardly from each carriage, a pair of jaws movable across the line of travel of each catch, yieldable resilient means bearing against each pair of said jaws to keep them normally in contact, a hand-lever pivoted between said pairs of jaws, and a linling-connection between the free extremity of each of said jaws and one end of said lever adapted to operate to disengage an engaged catch from either pair of jaws when said lever is shifted in an appropriate direction.

l. The combination with a supporting frame of cable-pulleys mounted thereon, two hoisting carriages or platforms arranged to be raised or lowered alternately side by side beneath said frame, fixed pulleys a hoistingcable attached by its ends to said carriages or platforms and passing upward over said cable pulleys, thence down around said iixed pulleys, a lugged catch projecting upwardly from each carriage, a pair of pivoted jaws movable across the line of travel of each catch, the lugs ou each catch being adapted to engage the tops of the adjacent pair of jaws` when said catch has passed therebetween, a hand-lever inedially pivoted to said frame between said pairs of jaws, and an adjustable linking-connection between the free extremity of each of said jaws and the end of said lever opposite its handle end, whereby the members of either pair of jaws are separated to disengage an engaged catch when said hand-lever is shifted in a certain direction.

The combination with a supporting frame of cable-pulleys mounted thereon, two hoisting carriages or platforms arranged to be raised or lowered alternately side by side beneath said frame, fixed pulleys, a hoistingcable attached by its ends to said carriages or platforms and passing upward over said cable pulleys, thence down around said fixed pulleys, a lugged catch projecting upwardly from each carriage, a pair of pivoted jaws movable across the line of travel `of each catch, the lugs on each catch being adapted to engage the tops of the adjacent pair of jaws when said catch has passed therebetween, a hand-lever medially pivoted to said frame between said pairs of jaws, pairs of clips secured to the rear end of said handlever and adjustable in their amount of separation, a pulley pivoted to said frame without each member of each pair of said jaws, a cable secured at or near the free extremity of each said member, passed thence about the adjacent one of said last-mentioned pulleys and then secured between one of the pairs of clips on the rear end of said handlever, said hand-lever being adapted when shifted in either direction to draw upon the cables attached to 011e of said pairs of jaws and separate the members of said pair to disengage them from the engaged lugs of their adjacent catch.

Signed at lvaterloo, Iowa, this 27th day of Jan. 1909.

CONSTANTINE J. BURKE. ARTHUR A. SI-HPPY. lVitnesses O. D. YOUNG, G. C. KENNEDY. 

